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b6895dd8 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
88cb7938 | 16 | /* $Id$ */ |
19364939 | 17 | |
cf98c13f | 18 | /////////////////////////////////////////////////////////////////////////////// |
19 | // // | |
20 | // Time Projection Chamber track hits object // | |
21 | // | |
22 | // Origin: Marian Ivanov , GSI Darmstadt | |
23 | // | |
24 | // Class for storing simulated AliTPCHits for given track // | |
25 | // -average compression comparing to classical ClonesArray is // | |
26 | // around 5-7 (depending on the required hit precision) // | |
27 | // // | |
28 | //Begin_Html | |
29 | /* | |
30 | <img src="gif/AliTPCTrackHits.gif"> | |
31 | */ | |
32 | //End_Html | |
33 | // // | |
34 | // // | |
35 | /////////////////////////////////////////////////////////////////////////////// | |
36 | ||
6d171107 | 37 | #include <TError.h> |
cf98c13f | 38 | |
6d171107 | 39 | #include "AliTPC.h" |
40 | #include "AliTPCTrackHits.h" | |
ef00250a | 41 | // Interface classes |
42 | #include "AliTPCTrackHitsInterfaces.h" | |
cf98c13f | 43 | |
44 | ClassImp(AliTPCTrackHits) | |
45 | LClassImp(AliTrackHitsInfo) | |
46 | LClassImp(AliTrackHitsParam) | |
47 | LClassImp(AliHitInfo) | |
48 | ||
49 | Int_t AliTrackHitsInfo::fgCounter1 =0; | |
50 | Int_t AliTrackHitsInfo::fgCounter2 =0; | |
51 | Int_t AliTrackHitsParam::fgCounter1 =0; | |
52 | Int_t AliTrackHitsParam::fgCounter2 =0; | |
53 | Int_t AliHitInfo::fgCounter1 =0; | |
54 | Int_t AliHitInfo::fgCounter2 =0; | |
55 | Int_t AliTPCTrackHits::fgCounter1 =0; | |
56 | Int_t AliTPCTrackHits::fgCounter2 =0; | |
57 | const Double_t AliTPCTrackHits::fgkPrecision=1e-6; //precision | |
58 | const Double_t AliTPCTrackHits::fgkPrecision2=1e-20; //precision | |
e61fd20d | 59 | const Double_t AliTPCTrackHits::fgkTimePrecision=20.e-9; //hit time precision |
cf98c13f | 60 | |
61 | ||
6d171107 | 62 | class AliTPCCurrentHit { |
982aff31 | 63 | private: |
64 | AliTPChit fHit; // - hit in "standard" representation | |
cf98c13f | 65 | UInt_t fInfoIndex;// - current info pointer |
66 | UInt_t fParamIndex;// - current param pointer | |
67 | UInt_t fStackIndex; // - current hit stack index | |
68 | Double_t fR; //current Radius | |
69 | Bool_t fStatus; //current status | |
70 | }; | |
71 | ||
72 | ||
6d171107 | 73 | class AliTPCTempHitInfo { |
982aff31 | 74 | private: |
75 | enum { kStackSize = 100}; | |
e15899a0 | 76 | AliTPCTempHitInfo(); |
6d171107 | 77 | AliTPCTempHitInfo(const AliTPCTempHitInfo &) |
78 | {::Fatal("copy ctor","Not implemented\n");} | |
79 | AliTPCTempHitInfo & operator = (const AliTPCTempHitInfo &) | |
80 | {::Fatal("= operator","Not implemented\n");return *this;} | |
81 | ||
e61fd20d | 82 | void NewParam(Double_t r, Double_t z, Double_t fi, Int_t q, Float_t time); |
83 | void SetHit(Double_t r, Double_t z, Double_t fi, Int_t q, Float_t time); | |
cf98c13f | 84 | Double_t * GetPosition(Int_t index){return &fPositionStack[index*3];} |
85 | void UpdateParam(Double_t maxdelta); //recal | |
86 | void Fit2(Double_t fSumY, Double_t fSumYX, Double_t fSumYX2, | |
87 | Double_t fSumX, Double_t fSumX2, Double_t fSumX3, | |
88 | Double_t fSumX4, Int_t n, | |
89 | Double_t &a, Double_t &b, Double_t &c); | |
90 | void Fit(AliTrackHitsParam * param); | |
835b3d81 | 91 | Double_t fSumDr; //fSumDr |
92 | Double_t fSumDr2; //fSumDr2 | |
93 | Double_t fSumDr3; // fSumDr3 | |
94 | Double_t fSumDr4; //fSumDr4 | |
95 | Double_t fSumDFi; //fSumDFi | |
96 | Double_t fSumDFiDr; // fSumDFiDr | |
97 | Double_t fSumDFiDr2;//fSumDFiDr2 | |
98 | Double_t fSumDZ; //fSumDZ | |
99 | Double_t fSumDZDr; //fSumDZDr | |
100 | Double_t fSumDZDr2; //fSumDZDr2 | |
cf98c13f | 101 | Double_t fOldR; //previos r |
982aff31 | 102 | Double_t fPositionStack[3*kStackSize]; //position stack |
103 | UInt_t fQStack[kStackSize]; //Q stack | |
e61fd20d | 104 | Float_t fTimeStack[kStackSize]; //time stack |
cf98c13f | 105 | UInt_t fStackIndex; //current stack index |
106 | UInt_t fInfoIndex; //current track info index | |
107 | UInt_t fParamIndex; //current track parameters index | |
108 | AliTrackHitsInfo * fInfo; //current track info | |
109 | AliTrackHitsParam * fParam; //current track param | |
110 | }; | |
111 | ||
112 | ||
113 | AliTPCTempHitInfo::AliTPCTempHitInfo() | |
114 | { | |
115 | // | |
116 | //set to default value | |
117 | fSumDr=fSumDr2=fSumDr3=fSumDr4= | |
118 | fSumDFi=fSumDFiDr=fSumDFiDr2= | |
119 | fSumDZ=fSumDZDr=fSumDZDr2=0; | |
120 | fStackIndex = 0; | |
121 | fInfoIndex = 0; | |
122 | fParamIndex = 0; | |
123 | } | |
124 | ||
125 | ||
e61fd20d | 126 | void AliTPCTempHitInfo::NewParam(Double_t r, Double_t z, Double_t fi, Int_t q, Float_t time) |
cf98c13f | 127 | { |
128 | // | |
129 | //reset stack and sum parameters | |
130 | //store line initial point | |
131 | fSumDr=fSumDr2=fSumDr3=fSumDr4= | |
132 | fSumDFi=fSumDFiDr=fSumDFiDr2= | |
133 | fSumDZ=fSumDZDr=fSumDZDr2=0; | |
134 | fStackIndex=0; | |
135 | fParam->fR = r; | |
136 | fOldR = r; | |
137 | fParam->fZ = z; | |
138 | fParam->fFi = fi; | |
139 | fParam->fAn = 0.; | |
140 | fParam->fAd = 0.; | |
141 | fParam->fTheta =0.; | |
142 | fParam->fThetaD =0.; | |
e61fd20d | 143 | SetHit(r,z,fi,q,time); |
cf98c13f | 144 | } |
145 | ||
e61fd20d | 146 | void AliTPCTempHitInfo::SetHit(Double_t r, Double_t z, Double_t fi, Int_t q, Float_t time) |
cf98c13f | 147 | { |
148 | // | |
149 | //add hit to the stack | |
150 | //recalculate new estimete of line parameters | |
151 | Double_t *f = GetPosition(fStackIndex); | |
152 | f[0] = r; | |
153 | f[1] = z; | |
154 | f[2] = fi; | |
155 | fQStack[fStackIndex]=q; | |
e61fd20d | 156 | fTimeStack[fStackIndex]=time; |
cf98c13f | 157 | if (fStackIndex==0) return; |
158 | Double_t dr = (r-fParam->fR); | |
159 | if (TMath::Abs(dr)<AliTPCTrackHits::fgkPrecision) dr =AliTPCTrackHits::fgkPrecision; | |
160 | Double_t dfi = fi-fParam->fFi; | |
161 | Double_t dz = z -fParam->fZ; | |
162 | Double_t dr2 =dr*dr; | |
163 | Double_t dr3 =dr2*dr; | |
164 | Double_t dr4 =dr3*dr; | |
165 | fSumDr +=dr; | |
166 | fSumDr2+=dr2; | |
167 | fSumDr3+=dr3; | |
168 | fSumDr4+=dr4; | |
169 | fSumDFi +=dfi; | |
170 | fSumDFiDr+=dfi*dr; | |
171 | fSumDFiDr2+=dfi*dr2; | |
172 | fSumDZ +=dz; | |
173 | fSumDZDr+=dz*dr; | |
174 | fSumDZDr2+=dz*dr2; | |
175 | ||
176 | //update fit parameters | |
177 | // | |
178 | Double_t det = fSumDr2*fSumDr4-fSumDr3*fSumDr3; | |
179 | if (TMath::Abs(det)<AliTPCTrackHits::fgkPrecision2) return; | |
180 | if ( ( fStackIndex>1 ) ){ | |
181 | fParam->fAn = (fSumDr4*fSumDFiDr-fSumDr3*fSumDFiDr2)/det; | |
182 | fParam->fAd = (fSumDr2*fSumDFiDr2-fSumDr3*fSumDFiDr)/det; | |
183 | } | |
184 | else | |
185 | fParam->fAn = fSumDFiDr/fSumDr2; | |
186 | if ( ( fStackIndex>1 ) ){ | |
187 | fParam->fTheta = (fSumDr4*fSumDZDr-fSumDr3*fSumDZDr2)/det; | |
188 | fParam->fThetaD= (fSumDr2*fSumDZDr2-fSumDr3*fSumDZDr)/det; | |
189 | } | |
190 | else | |
191 | fParam->fTheta = fSumDZDr/fSumDr2; | |
192 | } | |
193 | ||
194 | ||
195 | void AliTPCTempHitInfo::UpdateParam(Double_t maxdelta) | |
196 | { | |
197 | //recalc parameters not fixing origin point | |
198 | if (fStackIndex>5){ | |
199 | Double_t a,b,c; | |
200 | a=b=c=0; | |
201 | Fit2(fSumDFi, fSumDFiDr, fSumDFiDr2, fSumDr,fSumDr2,fSumDr3,fSumDr4, | |
202 | fStackIndex, a,b,c); | |
203 | if (TMath::Abs(a)<maxdelta){ | |
204 | fParam->fFi +=a/fParam->fR; | |
205 | fParam->fAn = b; | |
206 | fParam->fAd = c; | |
207 | } | |
208 | Fit2(fSumDZ, fSumDZDr, fSumDZDr2, fSumDr,fSumDr2,fSumDr3,fSumDr4, | |
209 | fStackIndex, a,b,c) ; | |
210 | if (TMath::Abs(a)<maxdelta){ | |
211 | fParam->fZ +=a; | |
212 | fParam->fTheta = b; | |
213 | fParam->fThetaD = c; | |
214 | } | |
215 | } | |
216 | ||
217 | } | |
218 | void AliTPCTempHitInfo::Fit2(Double_t fSumY, Double_t fSumYX, Double_t fSumYX2, | |
219 | Double_t fSumX, Double_t fSumX2, Double_t fSumX3, | |
220 | Double_t fSumX4, Int_t n, | |
221 | Double_t &a, Double_t &b, Double_t &c) | |
222 | { | |
223 | //fit of second order | |
224 | Double_t det = | |
225 | n* (fSumX2*fSumX4-fSumX3*fSumX3) - | |
226 | fSumX* (fSumX*fSumX4-fSumX3*fSumX2)+ | |
227 | fSumX2* (fSumX*fSumX3-fSumX2*fSumX2); | |
228 | ||
229 | if (TMath::Abs(det)> AliTPCTrackHits::fgkPrecision) { | |
230 | a = | |
231 | (fSumY * (fSumX2*fSumX4-fSumX3*fSumX3)- | |
232 | fSumX *(fSumYX*fSumX4-fSumYX2*fSumX3)+ | |
233 | fSumX2*(fSumYX*fSumX3-fSumYX2*fSumX2))/det; | |
234 | b= | |
235 | (n*(fSumYX*fSumX4-fSumX3*fSumYX2)- | |
236 | fSumY*(fSumX*fSumX4-fSumX3*fSumX2)+ | |
237 | fSumX2*(fSumX*fSumYX2-fSumYX*fSumX2))/det; | |
238 | c= | |
239 | (n*(fSumX2*fSumYX2-fSumYX*fSumX3)- | |
240 | fSumX*(fSumX*fSumYX2-fSumYX*fSumX2)+ | |
241 | fSumY*(fSumX*fSumX3-fSumX2*fSumX2))/det; | |
242 | } | |
243 | } | |
244 | ||
245 | void AliTPCTempHitInfo::Fit(AliTrackHitsParam * param) | |
246 | { | |
247 | // fit fixing first and the last point | |
248 | //result stored in new param | |
249 | Double_t dx2 = (GetPosition(fStackIndex))[0]-fParam->fR; | |
250 | Double_t det = fSumDr4+dx2*fSumDr2-2*dx2*fSumDr3; | |
251 | if ( (TMath::Abs(det)> AliTPCTrackHits::fgkPrecision) && | |
252 | ((TMath::Abs(dx2)> AliTPCTrackHits::fgkPrecision))){ | |
253 | Double_t dfi2 = (GetPosition(fStackIndex))[1]-fParam->fFi; | |
254 | param->fAd = (fSumDFiDr2+dfi2*fSumDr-dx2*fSumDFiDr-dfi2*fSumDr3/dx2)/det; | |
255 | param->fAn = (dfi2-param->fAd*dx2*dx2)/dx2; | |
256 | ||
257 | Double_t dz2 = (GetPosition(fStackIndex))[1]-fParam->fZ; | |
258 | param->fTheta = (fSumDZDr2+dz2*fSumDr-dx2*fSumDZDr-dz2*fSumDr3/dx2)/det; | |
259 | param->fTheta = (dz2-param->fAd*dx2*dx2)/dx2; | |
260 | } | |
261 | ||
262 | } | |
263 | ||
783ce8a7 | 264 | //______________________________________________________________________ |
265 | AliTrackHitsInfo::AliTrackHitsInfo() : | |
266 | fTrackID(0), | |
267 | fVolumeID(0), | |
268 | fHitParamIndex(0) | |
269 | { | |
270 | // | |
271 | // Default constructor | |
272 | // | |
273 | fgCounter1++; | |
274 | fgCounter2++; | |
275 | } | |
cf98c13f | 276 | |
783ce8a7 | 277 | //______________________________________________________________________ |
278 | AliTrackHitsParam::AliTrackHitsParam() : | |
279 | fR(0), | |
280 | fZ(0), | |
281 | fFi(0), | |
282 | fAn(0), | |
283 | fAd(0), | |
284 | fTheta(0), | |
285 | fThetaD(0) | |
286 | { | |
287 | // | |
288 | // Default constructor | |
289 | // | |
290 | fgCounter1++; | |
291 | fgCounter2++; | |
292 | } | |
cf98c13f | 293 | |
294 | ||
295 | AliTPCTrackHits::AliTPCTrackHits() | |
296 | { | |
297 | // | |
298 | //default constructor | |
299 | // | |
300 | const Float_t kHitPrecision=0.002; //default precision for hit position in cm | |
301 | const Float_t kStep =0.003; //30 mum step | |
302 | const UShort_t kMaxDistance =100; //maximum distance 100 | |
303 | ||
304 | fPrecision=kHitPrecision; //precision in cm | |
305 | fStep = kStep; //step size | |
306 | fMaxDistance = kMaxDistance; //maximum distance | |
307 | fTempInfo =0; | |
308 | fTrackHitsInfo = new AliObjectArray("AliTrackHitsInfo"); | |
309 | fTrackHitsParam = new AliObjectArray("AliTrackHitsParam"); | |
633d3715 | 310 | fHitsPosAndQ = new TArrayOfArrayVStack("AliHitInfo"); |
cf98c13f | 311 | fCurrentHit = new AliTPCCurrentHit; |
312 | fgCounter1++; | |
313 | fgCounter2++; | |
314 | ||
315 | } | |
316 | ||
835b3d81 | 317 | AliTPCTrackHits::AliTPCTrackHits(const AliTPCTrackHits& r) : TObject(r) |
318 | { | |
e15899a0 | 319 | //dummy |
320 | } | |
321 | AliTPCTrackHits &AliTPCTrackHits::operator=(const AliTPCTrackHits& /* r */) | |
322 | { | |
323 | //dummy | |
324 | return *this; | |
835b3d81 | 325 | } |
835b3d81 | 326 | |
cf98c13f | 327 | AliTPCTrackHits::~AliTPCTrackHits() |
328 | { | |
329 | // | |
330 | //default destructor | |
331 | // | |
332 | if (fTrackHitsInfo) delete fTrackHitsInfo; | |
333 | if (fTrackHitsParam) delete fTrackHitsParam; | |
334 | if (fHitsPosAndQ) delete fHitsPosAndQ; | |
335 | if (fCurrentHit) delete fCurrentHit; | |
336 | if (fTempInfo) delete fTempInfo; | |
337 | fgCounter1--; | |
338 | } | |
339 | ||
340 | void AliTPCTrackHits::Clear() | |
341 | { | |
342 | // | |
343 | //clear object | |
633d3715 | 344 | fTrackHitsInfo->Clear(); |
345 | fTrackHitsParam->Clear(); | |
346 | //fTrackHitsInfo->Resize(0); | |
347 | //fTrackHitsParam->Resize(0); | |
cf98c13f | 348 | fHitsPosAndQ->Clear(); |
349 | ||
350 | if (fTempInfo){ | |
351 | delete fTempInfo; | |
352 | fTempInfo =0; | |
353 | } | |
354 | } | |
355 | ||
356 | ||
357 | void AliTPCTrackHits::AddHitKartez(Int_t volumeID, Int_t trackID, Double_t x, | |
e61fd20d | 358 | Double_t y, Double_t z,Int_t q, Float_t time) |
cf98c13f | 359 | { |
835b3d81 | 360 | //add hits (cartesian) |
cf98c13f | 361 | Double_t r = TMath::Sqrt(x*x+y*y); |
362 | Double_t fi = TMath::ACos(x/r); | |
363 | if (y<0) fi*=-1.; | |
e61fd20d | 364 | AddHit(volumeID,trackID,r,z,fi,q,time); |
cf98c13f | 365 | } |
366 | ||
367 | void AliTPCTrackHits::AddHit(Int_t volumeID, Int_t trackID, | |
e61fd20d | 368 | Double_t r, Double_t z, Double_t fi, Int_t q, Float_t time) |
cf98c13f | 369 | { |
370 | // | |
371 | Bool_t diff=kFALSE; | |
372 | if (!fTempInfo) { //initialsation of track | |
373 | fTempInfo = new AliTPCTempHitInfo; | |
374 | // | |
375 | if (fTrackHitsInfo->GetCapacity()<10) fTrackHitsInfo->Reserve(10); | |
376 | fTrackHitsInfo->Resize(1); | |
377 | fTempInfo->fInfoIndex =0; | |
378 | if (fTrackHitsParam->GetCapacity()<100) fTrackHitsParam->Reserve(100); | |
379 | fTrackHitsParam->Resize(1); | |
380 | // | |
381 | fTempInfo->fInfo = | |
382 | (AliTrackHitsInfo*) (fTrackHitsInfo->At(0)); | |
383 | fTempInfo->fInfo->fVolumeID = volumeID; | |
384 | fTempInfo->fInfo->fTrackID = trackID; | |
385 | fTempInfo->fInfo->fHitParamIndex =0; | |
386 | fTempInfo->fInfoIndex = 0; | |
387 | // | |
388 | fTempInfo->fParam = | |
389 | (AliTrackHitsParam*) (fTrackHitsParam->At(0)); | |
390 | fTempInfo->fParamIndex = 0; | |
e61fd20d | 391 | fTempInfo->NewParam(r,z,fi,q,time); |
cf98c13f | 392 | return; |
393 | } | |
394 | ||
395 | Int_t size = fHitsPosAndQ->GetSize(); | |
396 | if (size>(Int_t)fTempInfo->fParamIndex) { | |
397 | fTempInfo->fParamIndex++; | |
398 | if (fTempInfo->fParamIndex+1>fTrackHitsParam->GetSize()) | |
399 | fTrackHitsParam->Resize(fTempInfo->fParamIndex+1); | |
400 | fTempInfo->fParam = | |
401 | (AliTrackHitsParam*) (fTrackHitsParam->At(fTempInfo->fParamIndex)); | |
e61fd20d | 402 | fTempInfo->NewParam(r,z,fi,q,time); |
cf98c13f | 403 | return; |
404 | } | |
405 | ||
406 | ||
407 | // if new volume or new trackID | |
408 | if ( (volumeID!=fTempInfo->fInfo->fVolumeID) || | |
409 | (trackID!=fTempInfo->fInfo->fTrackID)){ | |
410 | diff=kTRUE; | |
411 | ||
412 | FlushHitStack(kTRUE); | |
413 | ||
414 | fTempInfo->fInfoIndex++; | |
415 | if (fTempInfo->fInfoIndex+1>fTrackHitsInfo->GetSize()) | |
416 | fTrackHitsInfo->Resize(fTempInfo->fInfoIndex+1); | |
417 | fTempInfo->fInfo = | |
418 | (AliTrackHitsInfo*) (fTrackHitsInfo->At(fTempInfo->fInfoIndex)); | |
419 | fTempInfo->fInfo->fVolumeID = volumeID; | |
420 | fTempInfo->fInfo->fTrackID = trackID; | |
421 | fTempInfo->fInfo->fHitParamIndex =fTempInfo->fParamIndex+1; | |
422 | // FlushHitStack(kTRUE); | |
423 | ||
424 | fTempInfo->fParamIndex++; | |
425 | if (fTempInfo->fParamIndex+1>fTrackHitsParam->GetSize()) | |
426 | fTrackHitsParam->Resize(fTempInfo->fParamIndex+1); | |
427 | fTempInfo->fParam = | |
428 | (AliTrackHitsParam*) (fTrackHitsParam->At(fTempInfo->fParamIndex)); | |
e61fd20d | 429 | fTempInfo->NewParam(r,z,fi,q,time); |
cf98c13f | 430 | return; |
431 | } | |
432 | ||
433 | //calculate current fit precission to next point | |
434 | AliTrackHitsParam ¶m = *(fTempInfo->fParam); | |
435 | Double_t dd=0; | |
436 | Double_t dl=0; | |
437 | Double_t ratio=0; | |
438 | Double_t dr,dz,dfi,ddz,ddfi; | |
439 | Double_t drhit,ddl; | |
440 | dr=dz=dfi=ddz=ddfi=0; | |
441 | drhit = r-fTempInfo->fOldR; | |
442 | { | |
443 | //Double_t dfi2 = param.fAn+2*param.fAd*(r-param.fR); | |
444 | Double_t dfi2 = param.fAn; | |
445 | dfi2*=dfi2*fTempInfo->fOldR*fTempInfo->fOldR; | |
446 | //Double_t ddz2 = param.fTheta+2*param.fThetaD*(r-param.fR); | |
447 | Double_t ddz2 = param.fTheta; | |
448 | ddz2*=ddz2; | |
449 | ratio = TMath::Sqrt(1.+ dfi2+ ddz2); | |
450 | } | |
8217f168 | 451 | // |
452 | ||
453 | ||
454 | dl = (TMath::Abs(drhit*ratio/fStep)<32000) ? fStep * Short_t(TMath::Nint(drhit*ratio/fStep)):0; | |
cf98c13f | 455 | ddl = dl - drhit*ratio; |
456 | fTempInfo->fOldR += dl/ratio; | |
457 | ||
458 | if (fTempInfo->fStackIndex>2){ | |
459 | dr = r-param.fR; | |
460 | dz = z-param.fZ; | |
461 | dfi = fi-param.fFi; | |
462 | ddz = dr*param.fTheta+dr*dr*param.fThetaD-dz; | |
463 | ddfi= dr*param.fAn+dr*dr*param.fAd-dfi; | |
464 | dd = TMath::Sqrt(ddz*ddz+r*r*ddfi*ddfi+ddl*ddl); | |
465 | // | |
466 | } | |
467 | //safety factor 1.25 | |
468 | if ( ( (dd*1.25>fPrecision) ) || | |
982aff31 | 469 | (fTempInfo->fStackIndex+4>fTempInfo->kStackSize) || |
cf98c13f | 470 | (TMath::Abs(dl/fStep)>fMaxDistance) ) |
471 | diff=kTRUE; | |
472 | else{ | |
473 | fTempInfo->fStackIndex++; | |
e61fd20d | 474 | fTempInfo->SetHit(r,z,fi,q,time); |
cf98c13f | 475 | return; |
476 | } | |
477 | //if parameter changed | |
478 | if (FlushHitStack(kFALSE)){ //if full buffer flushed | |
479 | fTempInfo->fParamIndex++; | |
480 | if (fTempInfo->fParamIndex+1>fTrackHitsParam->GetSize()) | |
481 | fTrackHitsParam->Resize(fTempInfo->fParamIndex+1); | |
482 | fTempInfo->fParam = | |
483 | (AliTrackHitsParam*) (fTrackHitsParam->At(fTempInfo->fParamIndex)); | |
e61fd20d | 484 | fTempInfo->NewParam(r,z,fi,q,time); |
cf98c13f | 485 | } |
486 | else{ | |
487 | fTempInfo->fStackIndex++; | |
e61fd20d | 488 | fTempInfo->SetHit(r,z,fi,q,time); |
cf98c13f | 489 | } |
490 | } | |
491 | ||
492 | Bool_t AliTPCTrackHits::FlushHitStack(Bool_t force) | |
493 | { | |
494 | // | |
495 | //write fHitsPosAndQ information from the stack to te arrays | |
496 | if (!fTempInfo) return kFALSE; | |
497 | Int_t size = fHitsPosAndQ->GetSize(); | |
498 | ||
499 | if ( (size>0)&&(size!=(Int_t)fTempInfo->fParamIndex)) return kFALSE; | |
500 | ||
501 | if (fHitsPosAndQ->Push(fTempInfo->fStackIndex+1)!=fTempInfo->fParamIndex){ | |
502 | cout<<"internal error - contact MI\n"; | |
503 | return kFALSE; | |
504 | } | |
505 | AliHitInfo * info; | |
506 | ||
507 | AliTrackHitsParam & param = *(fTempInfo->fParam); | |
508 | //recalculate track parameter not fixing first point | |
509 | fTempInfo->UpdateParam(fStep/4.); | |
510 | //fTempInfo->Fit(fTempInfo->fParam); //- fixing the first and the last point | |
511 | ||
512 | Double_t oldr = param.fR; | |
513 | //cout<<"C3"<<fTempInfo->fStackIndex<<"\n"<<flush; | |
514 | UInt_t i; | |
515 | Double_t dd; | |
516 | for (i=0; i <= fTempInfo->fStackIndex; i++){ | |
517 | Double_t * position = fTempInfo->GetPosition(i); | |
518 | Double_t dr = position[0]-oldr; | |
519 | Double_t ratio; | |
520 | { | |
521 | //Double_t dfi2 = param.fAn+2*param.fAd*(position[0]-param.fR); | |
522 | Double_t dfi2 = param.fAn; | |
523 | dfi2*=dfi2*oldr*oldr; | |
524 | //Double_t ddz2 = param.fTheta+2*param.fThetaD*(position[0]-param.fR); | |
525 | Double_t ddz2 = param.fTheta; | |
526 | ddz2*=ddz2; | |
527 | ratio = TMath::Sqrt(1.+ dfi2+ ddz2); | |
528 | } | |
529 | ||
8217f168 | 530 | Double_t dl = (TMath::Abs(dr*ratio/fStep)<32000) ? fStep*(Short_t)TMath::Nint(dr*ratio/fStep):0; |
cf98c13f | 531 | dr = dl/ratio; |
532 | oldr+=dr; | |
533 | //calculate precission | |
534 | AliTrackHitsParam ¶m = *(fTempInfo->fParam); | |
535 | //real deltas | |
536 | Double_t dr1= position[0]-param.fR; | |
537 | Double_t dz = position[1]-param.fZ; | |
538 | ||
539 | Double_t dfi = position[2]-param.fFi; | |
540 | //extrapolated deltas | |
541 | Double_t dr2 = oldr-param.fR; | |
542 | Double_t ddr = dr2-dr1; | |
543 | Double_t ddz = dr2*param.fTheta+dr2*dr2*param.fThetaD-dz; | |
544 | Double_t ddfi= dr2*param.fAn+dr2*dr2*param.fAd-dfi; | |
545 | dd = TMath::Sqrt(ddz*ddz+oldr*oldr*ddfi*ddfi+ddr*ddr); | |
546 | ||
547 | if ( (dd>fPrecision) ){ | |
548 | if (i==0){ | |
549 | param.fAn = 0; | |
550 | param.fAd = 0; | |
551 | param.fTheta =0; | |
552 | param.fThetaD =0; | |
553 | Double_t ddz = dr2*param.fTheta+dr2*dr2*param.fThetaD-dz; | |
554 | Double_t ddfi= dr2*param.fAn+dr2*dr2*param.fAd-dfi; | |
555 | dl = 0; | |
556 | dd = TMath::Sqrt(ddz*ddz+oldr*oldr*ddfi*ddfi+ddr*ddr); | |
557 | } | |
558 | else | |
559 | break; | |
560 | } | |
561 | ||
562 | info = (AliHitInfo*)(fHitsPosAndQ->At(fTempInfo->fParamIndex,i)); | |
8217f168 | 563 | info->fHitDistance = (TMath::Abs(dl/fStep)<32000) ?Short_t(TMath::Nint(dl/fStep)):0; |
cf98c13f | 564 | info->fCharge = Short_t(fTempInfo->fQStack[i]); |
e61fd20d | 565 | info->fTime = TMath::Nint(fTempInfo->fTimeStack[i]/AliTPCTrackHits::fgkTimePrecision); |
cf98c13f | 566 | /* |
567 | cout<<"C2"; | |
568 | cout<<" "<<fTempInfo->fStackIndex<<" \t"; | |
569 | cout<<" "<<i<<" \t"; | |
570 | cout<<position[0]<<"\t"; | |
571 | cout<<position[1]<<"\t"; | |
572 | cout<<position[2]<<"\t"; | |
573 | cout<<param.fAn<<"\t"; | |
574 | cout<<param.fTheta<<"\t"; | |
575 | cout<<dr1<<"\t"<<ddr<<"\t"<<ddz<<"\t"<<ddfi<<"\t"<<dd<<"\n"<<flush; | |
576 | */ | |
577 | } | |
578 | ||
579 | if (i<=fTempInfo->fStackIndex){ //if previous iteration not succesfull | |
580 | fHitsPosAndQ->Resize(fTempInfo->fParamIndex,i); | |
581 | // | |
582 | fTempInfo->fParamIndex++; | |
583 | if (fTempInfo->fParamIndex+1>fTrackHitsParam->GetSize()) | |
584 | fTrackHitsParam->Resize(fTempInfo->fParamIndex+1); | |
585 | fTempInfo->fParam = | |
586 | (AliTrackHitsParam*) (fTrackHitsParam->At(fTempInfo->fParamIndex)); | |
587 | Double_t * p = fTempInfo->GetPosition(i); | |
588 | UInt_t index2 = fTempInfo->fStackIndex; | |
e61fd20d | 589 | fTempInfo->NewParam(p[0],p[1],p[2],fTempInfo->fQStack[i],fTempInfo->fTimeStack[i]); |
cf98c13f | 590 | if (i+1<=index2) FlushHitStack2(i+1,index2); |
591 | ||
592 | if (force) return FlushHitStack(kTRUE); | |
593 | return kFALSE; | |
594 | } | |
595 | return kTRUE; | |
596 | } | |
597 | ||
598 | ||
599 | void AliTPCTrackHits::FlushHitStack2(Int_t index1, Int_t index2) | |
600 | { | |
601 | // | |
602 | // second iteration flush stack | |
603 | // call only for hits where first iteration were not succesfully interpolated | |
604 | Double_t * positionstack = new Double_t[3*(index2-index1+1)]; | |
605 | UInt_t * qstack = new UInt_t[index2-index1+1]; | |
e61fd20d | 606 | Float_t * timestack = new Float_t[index2-index1+1]; |
cf98c13f | 607 | memcpy(positionstack, &fTempInfo->fPositionStack[3*index1], |
608 | (3*(index2-index1+1))*sizeof(Double_t)); | |
609 | memcpy(qstack, &fTempInfo->fQStack[index1],(index2-index1+1)*sizeof(UInt_t)); | |
e61fd20d | 610 | memcpy(timestack, &fTempInfo->fTimeStack[index1],(index2-index1+1)*sizeof(Float_t)); |
cf98c13f | 611 | Double_t *p = positionstack; |
612 | for (Int_t j=0; j<=index2-index1;j++){ | |
613 | fTempInfo->fStackIndex++; | |
e61fd20d | 614 | fTempInfo->SetHit(p[3*j+0],p[3*j+1],p[3*j+2],qstack[j],timestack[j]); |
cf98c13f | 615 | } |
616 | delete []positionstack; | |
617 | delete []qstack; | |
e61fd20d | 618 | delete []timestack; |
cf98c13f | 619 | } |
620 | ||
621 | ||
622 | ||
623 | ||
624 | ||
625 | ||
626 | ||
627 | ||
628 | ||
629 | Bool_t AliTPCTrackHits::First() | |
630 | { | |
631 | // | |
632 | //set Current hit for the first hit | |
633 | // | |
634 | AliTrackHitsInfo *info = (AliTrackHitsInfo *)fTrackHitsInfo->At(0); | |
635 | AliTrackHitsParam *param = (AliTrackHitsParam *)fTrackHitsParam->At(0); | |
636 | AliHitInfo * hinfo = (AliHitInfo *)fHitsPosAndQ->At(0,0); | |
637 | ||
638 | if (!(info) || !(param) || !(hinfo) ) { | |
639 | fCurrentHit->fStatus = kFALSE; | |
640 | return kFALSE; | |
641 | } | |
642 | ||
643 | fCurrentHit->fInfoIndex = 0; | |
644 | fCurrentHit->fParamIndex = 0; | |
645 | fCurrentHit->fStackIndex = 0; | |
646 | ||
647 | fCurrentHit->fHit.fSector = info->fVolumeID; | |
648 | fCurrentHit->fHit.SetTrack(info->fTrackID); | |
649 | fCurrentHit->fHit.SetX(param->fR*TMath::Cos(param->fFi)); | |
650 | fCurrentHit->fHit.SetY(param->fR*TMath::Sin(param->fFi)); | |
651 | fCurrentHit->fHit.SetZ(param->fZ); | |
e61fd20d | 652 | fCurrentHit->fHit.fQ = (Float_t)(hinfo->fCharge*AliTPCTrackHits::fgkTimePrecision); |
653 | fCurrentHit->fHit.fTime = hinfo->fTime; | |
cf98c13f | 654 | |
655 | fCurrentHit->fR = param->fR; | |
656 | ||
657 | return fCurrentHit->fStatus = kTRUE; | |
658 | } | |
659 | ||
25419831 | 660 | |
661 | /* | |
cf98c13f | 662 | Bool_t AliTPCTrackHits::Next() |
663 | { | |
664 | // | |
665 | // | |
666 | if (!(fCurrentHit->fStatus)) | |
667 | return kFALSE; | |
668 | ||
669 | fCurrentHit->fStackIndex++; | |
670 | AliHitInfo * hinfo = (AliHitInfo *)fHitsPosAndQ->At(fCurrentHit->fParamIndex, | |
671 | fCurrentHit->fStackIndex); | |
672 | AliTrackHitsInfo *info = (AliTrackHitsInfo *)fTrackHitsInfo->At(fCurrentHit->fInfoIndex); | |
673 | AliTrackHitsParam *param = (AliTrackHitsParam *)fTrackHitsParam->At(fCurrentHit->fParamIndex); | |
674 | ||
675 | if (!hinfo) { | |
676 | hinfo = (AliHitInfo *)fHitsPosAndQ->At(fCurrentHit->fParamIndex+1, 0); | |
677 | if (!hinfo) | |
678 | return fCurrentHit->fStatus = kFALSE; | |
679 | if (hinfo){ | |
680 | fCurrentHit->fParamIndex++; | |
681 | fCurrentHit->fStackIndex = 0; | |
682 | param = (AliTrackHitsParam *)fTrackHitsParam->At(fCurrentHit->fParamIndex); | |
683 | if (!param) | |
684 | return fCurrentHit->fStatus = kFALSE; | |
685 | fCurrentHit->fR = param->fR; | |
686 | ||
687 | if ((fCurrentHit->fInfoIndex+1<fTrackHitsInfo->GetSize()) | |
688 | &&((info+1)->fHitParamIndex<=fCurrentHit->fParamIndex)){ | |
689 | fCurrentHit->fInfoIndex++; | |
690 | info = (AliTrackHitsInfo *)fTrackHitsInfo->At(fCurrentHit->fInfoIndex); | |
691 | if (!info) | |
692 | return fCurrentHit->fStatus = kFALSE; | |
693 | fCurrentHit->fHit.fSector = info->fVolumeID; | |
694 | fCurrentHit->fHit.SetTrack(info->fTrackID); | |
695 | } | |
696 | } | |
697 | } | |
698 | Double_t ratio; | |
699 | { | |
700 | // Double_t dfi2 = param->fAn+2*param->fAd*(fCurrentHit->fR-param->fR); | |
701 | Double_t dfi2 = param->fAn; | |
702 | dfi2*=dfi2*fCurrentHit->fR*fCurrentHit->fR; | |
703 | // Double_t ddz2 = param->fTheta+2*param->fThetaD*(fCurrentHit->fR-param->fR); | |
704 | Double_t ddz2 = param->fTheta; | |
705 | ddz2*=ddz2; | |
706 | ratio = TMath::Sqrt(1.+ dfi2+ ddz2); | |
707 | } | |
708 | ||
709 | fCurrentHit->fHit.fQ = hinfo->fCharge; | |
e61fd20d | 710 | fCurrentHit->fHit.fTime = (Float_t)(hinfo->fTime*AliTPCTrackHits::fgkTimePrecision); |
cf98c13f | 711 | fCurrentHit->fR += fStep*hinfo->fHitDistance/ratio; |
712 | Double_t dR = fCurrentHit->fR - param->fR; | |
713 | //Double_t dR =0; | |
714 | Double_t fi = param->fFi + (param->fAn*dR+param->fAd*dR*dR); | |
715 | Double_t z = param->fZ + (param->fTheta*dR+param->fThetaD*dR*dR); | |
716 | ||
717 | fCurrentHit->fHit.SetX(fCurrentHit->fR*TMath::Cos(fi)); | |
718 | fCurrentHit->fHit.SetY(fCurrentHit->fR*TMath::Sin(fi)); | |
719 | fCurrentHit->fHit.SetZ(z); | |
720 | return kTRUE; | |
721 | } | |
25419831 | 722 | |
723 | */ | |
835b3d81 | 724 | AliTPChit * AliTPCTrackHits::GetHit() const |
cf98c13f | 725 | { |
726 | // | |
727 | return (fCurrentHit->fStatus)? &fCurrentHit->fHit:0; | |
728 | //return &fCurrentHit->fHit; | |
729 | ||
730 | } | |
731 | ||
25419831 | 732 | |
733 | ||
734 | Bool_t AliTPCTrackHits::Next(Int_t id) | |
735 | { | |
736 | // | |
737 | // | |
738 | if (!(fCurrentHit->fStatus)) | |
739 | return kFALSE; | |
740 | ||
741 | // fCurrentHit->fStackIndex++; | |
742 | AliHitInfo * hinfo = (AliHitInfo *)fHitsPosAndQ->At(fCurrentHit->fParamIndex, | |
743 | fCurrentHit->fStackIndex); | |
744 | AliTrackHitsInfo *info = (AliTrackHitsInfo *)fTrackHitsInfo->At(fCurrentHit->fInfoIndex); | |
745 | if (!info) { | |
746 | fCurrentHit->fStatus = kFALSE; | |
747 | return kFALSE; | |
748 | } | |
749 | AliTrackHitsParam *param = (AliTrackHitsParam *)fTrackHitsParam->At(fCurrentHit->fParamIndex); | |
750 | ||
751 | if ( (id>=0) && (info!=0) && (info->fVolumeID!=id)){ | |
752 | fCurrentHit->fInfoIndex++; | |
753 | info = (AliTrackHitsInfo *)fTrackHitsInfo->At(fCurrentHit->fInfoIndex); | |
754 | if (!info) { | |
755 | fCurrentHit->fStatus = kFALSE; | |
756 | return kFALSE; | |
757 | } | |
758 | fCurrentHit->fParamIndex = info->fHitParamIndex; | |
759 | param = (AliTrackHitsParam *)fTrackHitsParam->At(fCurrentHit->fParamIndex); | |
760 | fCurrentHit->fStackIndex =0; | |
761 | fCurrentHit->fR = param->fR; | |
762 | return Next(id); | |
763 | } | |
764 | if (!info) { | |
765 | fCurrentHit->fStatus = kFALSE; | |
766 | return kFALSE; | |
767 | } | |
768 | if (!hinfo) { | |
769 | hinfo = (AliHitInfo *)fHitsPosAndQ->At(fCurrentHit->fParamIndex+1, 0); | |
770 | if (!hinfo){ | |
771 | fCurrentHit->fStatus = kFALSE; | |
772 | return kFALSE; | |
773 | } | |
774 | if (hinfo){ | |
775 | fCurrentHit->fParamIndex++; | |
776 | fCurrentHit->fStackIndex = 0; | |
777 | param = (AliTrackHitsParam *)fTrackHitsParam->At(fCurrentHit->fParamIndex); | |
778 | if (!param){ | |
779 | fCurrentHit->fStatus = kFALSE; | |
780 | return kFALSE; | |
781 | } | |
782 | fCurrentHit->fR = param->fR; | |
783 | ||
784 | if ((fCurrentHit->fInfoIndex+1<fTrackHitsInfo->GetSize()) | |
785 | &&((info+1)->fHitParamIndex<=fCurrentHit->fParamIndex)){ | |
786 | fCurrentHit->fInfoIndex++; | |
787 | info = (AliTrackHitsInfo *)fTrackHitsInfo->At(fCurrentHit->fInfoIndex); | |
788 | if (!info){ | |
789 | fCurrentHit->fStatus = kFALSE; | |
790 | return kFALSE; | |
791 | } | |
792 | if ( (id>=0) && (info!=0) && (info->fVolumeID!=id)){ | |
793 | return Next(id); | |
794 | } | |
795 | fCurrentHit->fHit.fSector = info->fVolumeID; | |
796 | fCurrentHit->fHit.SetTrack(info->fTrackID); | |
797 | } | |
798 | } | |
799 | } | |
800 | Double_t ratio; | |
801 | { | |
802 | // Double_t dfi2 = param->fAn+2*param->fAd*(fCurrentHit->fR-param->fR); | |
803 | Double_t dfi2 = param->fAn; | |
804 | dfi2*=dfi2*fCurrentHit->fR*fCurrentHit->fR; | |
805 | // Double_t ddz2 = param->fTheta+2*param->fThetaD*(fCurrentHit->fR-param->fR); | |
806 | Double_t ddz2 = param->fTheta; | |
807 | ddz2*=ddz2; | |
808 | ratio = TMath::Sqrt(1.+ dfi2+ ddz2); | |
809 | } | |
810 | ||
811 | fCurrentHit->fHit.fQ = hinfo->fCharge; | |
e61fd20d | 812 | fCurrentHit->fHit.fTime = (Float_t)(hinfo->fTime*AliTPCTrackHits::fgkTimePrecision); |
25419831 | 813 | fCurrentHit->fR += fStep*hinfo->fHitDistance/ratio; |
814 | Double_t dR = fCurrentHit->fR - param->fR; | |
815 | //Double_t dR =0; | |
816 | Double_t fi = param->fFi + (param->fAn*dR+param->fAd*dR*dR); | |
817 | Double_t z = param->fZ + (param->fTheta*dR+param->fThetaD*dR*dR); | |
818 | ||
819 | fCurrentHit->fHit.SetX(fCurrentHit->fR*TMath::Cos(fi)); | |
820 | fCurrentHit->fHit.SetY(fCurrentHit->fR*TMath::Sin(fi)); | |
821 | fCurrentHit->fHit.SetZ(z); | |
822 | fCurrentHit->fHit.fSector = info->fVolumeID; | |
823 | fCurrentHit->fHit.SetTrack(info->fTrackID); | |
824 | // | |
825 | fCurrentHit->fStatus = kTRUE; | |
826 | fCurrentHit->fStackIndex++; | |
827 | return kTRUE; | |
828 | } | |
829 | ||
830 | ||
cf98c13f | 831 | AliTrackHitsParam * AliTPCTrackHits::GetParam() |
832 | { | |
833 | // | |
834 | return (fCurrentHit->fStatus)? (AliTrackHitsParam *)fTrackHitsParam->At(fCurrentHit->fParamIndex) :0; | |
835 | } | |
836 | ||
837 | AliHitInfo * AliTPCTrackHits::GetHitInfo() | |
838 | { | |
839 | // | |
840 | return (fCurrentHit->fStatus)? | |
841 | (AliHitInfo *)fHitsPosAndQ->At(fCurrentHit->fParamIndex,fCurrentHit->fStackIndex) :0; | |
842 | } | |
843 | ||
844 | ||
845 |